Adjustable Cam Gear Black

The Adjustable Cam Gear Black by AEM Electronics is a precision timing control component engineered for Honda B-Series engine builders and tuners seeking repeatability and performance optimization. This tru-time adjustable cam gear allows fine-tuning of intake and exhaust valve timing independently, enabling you to dial in peak horsepower and torque across your engine's power band. Whether you're running a stock rebuild or a fully modified B-Series motor, cam gear adjustment is critical for extracting maximum efficiency from your cylinder head and intake manifold combination.

Constructed from black anodized aluminum, this adjustable cam gear combines lightweight durability with corrosion resistance and a professional appearance under the valve cover. The tru-time design incorporates precisely machined adjustment slots that lock securely at your target timing position, eliminating slippage during engine operation or thermal cycling. Aluminum construction keeps rotating mass minimal, reducing parasitic drag on your crankshaft while maintaining the rigidity required for accurate valve event sequencing—a critical factor when running higher lift camshafts or aggressive fuel mapping.

B-Series engine enthusiasts—from street turbo builders to naturally aspirated track competitors—rely on adjustable cam gears to compensate for cam lobe wear, fuel octane variations, and intake runner tuning changes that shift optimal timing windows. Installation requires basic timing familiarity and proper locking procedures to secure the gear at your chosen advance or retard position. This component is essential for anyone running forced induction, modified fuel injection, variable valve timing diagnostics, or simply optimizing a freshly assembled or rebuilt B16, B18, or B20 engine for maximum reliability and output.